is this good enough?

<p>My weighted gpa is 4.1 and unweighted is 3.7.
How much emphasis does UPenn admissions place on GPA? I'm really worried about applying cuz i only had total of 4 hp/ap's in 10th and 11th grades combined and lot of b's in 10th. Even tho my grades improved within the 2 years, I still think my chances are low. If I take 5 ap's in senior year and get a's in them, will that look good enough to adcom? My SAT is 1810 right now but I'll retake it and hopefully break 2nd millennium mark. Can someone plz chance me based on those stats?</p>